At all the levels of the spinal cord, nerve cells in the gray substance are multipolar, varying much in their morphology. Many of them are Golgi type I and Golgi type II nerve cells. The axons of Golgi type I are long and pass out of the gray matter into the ventral spinal roots or the fiber tracts of the white matter.
Full Definition of MERCILESS. : having or showing no mercy: pitiless.
Calcifications are calcium deposits found within breast tissue. These deposits are seen as white spots on mammograms. They are extremely common and are usually benign. In a few cases, calcifications can sometimes be a very early sign of breast cancer.